CVE-2026-98937: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: perf/core: Check kernel access when kernel callchains are requested perf_event_open() currently gates perf_allow_kernel() only on !attr.exclude_kernel. However, users can still request kernel callchain collection with attr.exclude_callchain_kernel == 0 even when attr.exclude_kernel == 1. That still requires kernel profiling privilege, but the existing check does not enforce it. Update the permission check to call perf_allow_kernel() when either kernel sampling is requested or kernel callchains are requested. This keeps permission checks aligned with requested data and prevents unprivileged use of kernel callchain capture.

Засегнати продукти

• Linux Linux: 0764771dab80d7b84b9a271bee7f1b21a04a3f0c преди 132bee76097be421ab3012130b5b506324cf2be1; 0764771dab80d7b84b9a271bee7f1b21a04a3f0c преди 2581b43e162cfc43e6f5d8dd8d2b38f3441550de; 0764771dab80d7b84b9a271bee7f1b21a04a3f0c преди 6e187281f978a2bff98ead6aa40f8ddc9a2c9afb; 0764771dab80d7b84b9a271bee7f1b21a04a3f0c преди a4573a3838ae4fc73b70019cfa1dac9aaea7cc2f
• Linux Linux: 2.6.31; преди 2.6.31; 6.12.113 до 6.12.*; 6.18.56 до 6.18.*; 7.2.10 до 7.2.*; от 7.3 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-98937
• https://nvd.nist.gov/vuln/detail/CVE-2026-98937
• https://git.kernel.org/stable/c/132bee76097be421ab3012130b5b506324cf2be1
• https://git.kernel.org/stable/c/2581b43e162cfc43e6f5d8dd8d2b38f3441550de
• https://git.kernel.org/stable/c/6e187281f978a2bff98ead6aa40f8ddc9a2c9afb
• https://git.kernel.org/stable/c/a4573a3838ae4fc73b70019cfa1dac9aaea7cc2f